Synonyms and related words :
afflictive, awful, baneful, black, cataclysmal, cataclysmic, catastrophic, consuming, consumptive, deadly, demolishing, demolitionary, depredatory, desolating, destroying, destructive, devastating, dire, disastrous, distressful, distressing, doomful, dreadful, fatal, fateful, fratricidal, grievous, heartbreaking, internecine, lamentable, nihilist, nihilistic, pernicious, ravaging, regrettable, ruining, ruinous, self-destructive, subversionary, subversive, suicidal, terrible, tragic, unfortunate, vandalic, vandalish, vandalistic, wasteful, wasting, withering, woeful, wreckful